Solve the problem.The concentration of a drug in the bloodstream, measured in milligrams per liter, can be modeled by the function, 
where t is the number of minutes after injection of the drug. When will the drug be at its highest concentration? Approximate your answer rounded to two decimal places.
A. t = 3.65 minutes after the injection is given
B. at the time of injection
C. t = 4 minutes after the injection is given
D. t = 0.55 minutes after the injection is given
Answer: D
Mathematics
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A. 
B. 
C. {5}
D. {2}
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